Is there an actual "high impact paint" you're referring too that you want to test or are you just looking for a durable paint? As Sean mentioned, finding a paint that agrees with foam can be very challenging and typically most spray paints will crack on foam.. generally you're safe using acrylics on foam and what've found to be the absolute most durable to extreme flexing tests in Sherwin William's interior/exterior latex enamel paints for my base color. They're basically latex based paints with acrylic for the tone. So it's a win win in the durability department. I cut my house paint with water and spray on with my airbrush over my Rustoleum Leak Seal rubber primer coat. I use tamiya acrylics for all my detail painting once the house paint base color is applied. As for clear coats, you guessed it, hard to find one that wont crack under flexing or pressing a thumb into, the best flexible one I've found that works amazing on the house paint is Americana Matte Sealer. There is a code for it I can get you later. It's great, and very flexible, even resistant to rubbing alcohol in my test. My suit paint job is tough as nails and very durable